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opencode-alert

Cross-platform notification plugin for OpenCode — desktop alerts, sound alerts, and webhook notifications with project-level configuration.

Features

• Desktop notifications (Windows Toast, macOS Notification Center, Linux notify-send)
• Sound alerts with custom audio file support
• Smart filtering: quiet hours, throttle
• Project-level configuration with deep merge
• Zero context pollution (no tools or prompts injected)

Tech Stack

• Runtime: TypeScript (strict ESM), Node.js ≥18
• Build: tsup
• Test: Vitest
• Lint: Biome
• Desktop notifications: node-notifier (optional peer dependency) with OS shell fallbacks
• Sound: Platform-native commands (afplay / ffplay / PowerShell)
• Config: JSONC with deep merge and JSON Schema validation

Installation

npm (Recommended)

Add to your OpenCode config (~/.config/opencode/opencode.json):

{
"plugin": ["@chousyn/opencode-alert"]
}

Or pin a version:

{
"plugin": ["@chousyn/opencode-alert@0.2.4"]
}

Local Development

{
"plugin": ["file:///path/to/opencode-alert"]
}

Configuration

Create ~/.config/opencode/alert.jsonc (global) or .opencode/alert.jsonc (project):

{
// Global toggle"enabled": true,
// Desktop notifications"desktop": {
"enabled": true,
"events": ["idle", "error", "permission"]
},
// Sound notifications"sound": {
"enabled": true,
"events": {
"idle": "ding.wav",
"error": "alert.wav",
"permission": "ping.wav"
},
"default": "ding.wav",
"customDir": "~/.config/opencode/alert-sounds/"
},
// Smart filtering"filter": {
"quietHours": {
"enabled": false,
"start": "22:00",
"end": "08:00"
},
"minInterval": 5
}
}

Config Search Order

1. OPENCODE_ALERT_CONFIG environment variable
2. .opencode/alert.jsonc (project)
3. alert.jsonc (project root)
4. ~/.config/opencode/alert.jsonc (global)

Project config overrides global config (deep merge).

Minimal Config

{ "enabled": true }

Events

Event	Trigger	Default Notification
idle	AI task completed	Session title
error	Session error	Error message
permission	AI requests permission	Permission details
question	AI asks a question	Session title

Platform Requirements

Desktop Notifications

• Windows: No additional setup (uses SnoreToast via node-notifier)
• macOS: No additional setup (uses Notification Center)
• Linux: Requires notify-send (install: sudo apt install libnotify-bin)

Sound

• macOS: No additional setup (uses afplay)
• Linux: Requires ffmpeg (install: sudo apt install ffmpeg)
• Windows: No additional setup (uses PowerShell SoundPlayer/MediaPlayer)

Comparison

Feature	@chousyn/opencode-alert	opencode-notify	opencode-notificator
Windows	Yes	Yes	No
Custom sounds	All platforms	macOS only	All platforms
Webhook	Planned	No	No
Project config	Planned	No	No
Quiet hours	Yes	Yes	No
Toggle enabled	Yes	No (uninstall)	Yes
npm published	Yes	No (OCX)	No (manual)

Development

npm install
npm run build
npm test
npm run lint

License

MIT